Paper folding box



Mwah 4 1924@ s. BERGSTEIN PAPER FOLDING BOX' Filed March 23 IN V EN TOR.

A TTORW s. BERGSTEIN PAPER FOLDING BOX Filed March 23, 1922 3 Sheets-Sheet 5 Patented Mar. el, 1924.

NETE@ T-TES lati-85,585

PATENT @FFTCCEO SAMUEL BERGSTEIN, OF MIDDLETOWN, OHIO, .ASSIGNOR TO THE INTER/STATE FOLD- ING- BOX COMPANY, OF MIDDLETOWN, OHIO.

PAPER FOLDING BOX.

Application led March 23, 1922. Serial No. 546,020.

T all whom 'it may concern:

Be it known that I, SAMUEL BERGSTEIN,

a citizen of the United States, residing at Middletown, in the county of Butler and State of Ohio, have invented certain new and useful Improvements in Paper Folding Boxes and the like, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to improvements in paper boxes, having particular reference to paper folding boxes.

The main object of my invention is to provide a folding paper box, of the knockl5 down type, which will be cheaper to produce, and which will be stronger and more durable than ordinary types of paper folding boxes of this character.

Under the present practice of making paper folding boxes, various methods are employed in forming and assembling the boxes,-the most common practices being to use staples for fastening different parts of the separate units of the box together; or fastening the parts one to another by means of suitable slots and inserts,-one part having a slot and the coacting part an insert adapted to enter the slot whereby to interengage the parts; or to unite the contacting surfaces of overlapping parts by any suitable adhesive substance.

In all methods of the known practice, more or less hand work is required to assemble the boxes which adds relatively high percentages to the cost of production; also in certain common types of folding boxes the percentage of waste material is relatively high, and all these common types of paper folding boxes lack the strength and stability necessary to make the boxes in all respects suitable for average requirements.

/The improved paper folding box of the present invention is adapted for complete production on an automatic paper boxmaking machine,-handw0rk being entirely eliminated, and production accordingly cheapened. One unit of the improved box, in its preferred form, has twice-folded ends, and the other unit twice-folded sides, the folded portions being joined together by any suitable adhesive, as glue, paste, cement, etc.,-the corners of both units also being formed of double thiclmess of material glued together, thus the sides and ends of the'boxes 55 as assembled have triple strength and the corners quadruple strength, and; are far better adapted to withstand the usage to other-without setting-up of the separate units, as required in boxes made by the common practice.

In the accompanying drawings, my improved folding Fbox is shown in a preferred form of construction,-it being understood that the drawings serve merely to illustrate the invention, and that various modifications can be made relative to details of the arrangement without departing from the underlying principles of design and construction.

In the drawings:

Fig. 1 is a full plan view of the blank for forming the bottom of the box;

Fig. 2 is a full plan view of the blankv for forming the top of the box;

Fig. 3 is a detail of the blank forl the top of the box illustrating the first and second steps of folding;

Fig. 4 is a detail of the blank for the bottom of the box illustrating the first and second steps of folding;

Fig. 5 is a detail of the blank for the bottom of the box illustrating the final folding;

Fig. 6 is a detail of the blank for the top of the box illustrating the final folding;

Fig. 7 is a plan view of the completed bottom of the box. opened;

Fig. 8 is a plan view of the completed top of the box opened, and

Fig. 9 illustrates the complete assembly ofthe box. i'

The blanks -A and -B, as shown in Figs. l and 2, for forming the-top and bottom respectively of my improved box, may be produced by any well known method of pa er cutting or blanking.

s here shown, the blanks A and -B consist of integral parts, slotted on the lines l and scored on the lines 2 3-4 5 6 7 to form the corners and to effect straightline folding of the different portions of the blanks. While scoring of the blanks is not essential to the successful practice of the invention, it is desirable, where certain grades of paper stock are uscd, to prevent breaking of the paper on the folding lines, and also to effect more s mmetrical, straightline folding of the different parts.

As illustrated in Fig. 4, the iirst step of forming the bottom of the box from blank A consists in folding the portions C inwardly on score lines 4, the next step consisting in applying glue, or other e'ective adhesive, to the entire surfaces D and d of the blank, the second step of forming consisting in folding the portions E on lines 7 over the portions D, as illustrated in Fig. 4, and applying pressure to the fold to effect a iirm adhesion between the opposite contacting surfaces; the third and final step of forming the bottom of the box, consisting in folding on lines 6 the entire po-rtions -D and d, including the portions E secured thereto, inwardly, thus bringing the adhesive surfaces cl-a3 in contact with the folded portions c c, and completing the operation under pressure to form a firm adhesion of the parts one to another, the bottom of the box as completed having double thickness of material at both ends, and around the corners, and being in knock-down form as illustrated in Fig. 5,-the sides F, as here shown, having but a single thickness of material. The diagonal edges of portions C E and C d match one with the other as the parts are brought together, as indicated in dotted lines 8 in Fig. 5, thus eecting symmetrical junctures and continuity of the double thickness of material over the ends and around the corners of the box, the end corners being formed on lines 2 and 3, and the bottom corners on lines 5 6 as the unit is opened.

The top of the box is formed fro-m. blank B substantially in the same manner as the bottom from blank A, except that the double thickness of material is arranged at the sides and around the corners, instead of at the ends and around the corners. Thus the first step in forming the top consists in folding parts g inwardly on lines 4, as indicated in Fig. 3, the second step consisting in applying the adhesive to the entire surfaces of the portions H h, the second forming operation consisting in foldiner portions I on lines 7 upon portions li and causing adhesion of the parts one with the other under pressure as described in connection with the formation of the bottom of the box, the third and final step of the opration consisting in folding the portions h and li on lines 5, as inmesses dicated in Fig. 6, thus causing the adhesive surfaces of parts la to contact under Jpressure with the surfaces g to join the parts together, the diagonal edges of portions g-I and g L matching lone with the other, as indicated by dotted lines --9 in Fig. 6, as in the case of blank A, to effect symmetrical junctures and to cause the double thickness of material to extend the full length of the sides and 'around the corners of the box, in a manner similar to the construction of the ends and corners of the bottom of the box, the ends J of the top of the box, as here shown, being formed of a single `thickness of material, and the top of the box as completed being in knockdown form as indicated in Fig. 6, the end corners of the unit, as opened, being formed on lines 2 3 and the top corners on lines 5 6.

The complete assemblies of the box are illustrated in Figs. 7, 8 and 9, Fig. 7 illustrating the bottom, and Fig. 8 the top of the box opened, readyy to be assembled one with the other, as illustrated in Fig. 9. It will be observed that in the complete box, as illustrated in Fig. 9, the sides and ends of the box have triple thickness of material, and the four corners quadruple thickness of material, thus forming a box of symmetrical construction throughout, having rugged strength and durability, and being adapted for cheap production with a minimum waste of material.

Having` described my invention, l claim:

1. In a folding box, including in combination with a blank for forming a unit of said box, the corners of the blank being slotted, and portions thereof folded inwardly, opposite outwardly extended portions of said blank folded inwardly, and secured to adjacent margins thereof, and a second time folded with said margins-, the unoccupied por. tions of said margins being secured to the folded portions ofsaid corners whereby to effect multiple thickness of the material of the blank over the corners and on opposite sides of said box.

2. lin a folding box, including in combination with a blank for forming a unit of said box, the corners of the blank being slotted diagonally and portions thereof folded inwardly, opposite outwardly extended portions of said blank having diagonal edges, folded inwardly and secured to adjacent margins thereof, and a second time folded with said margins to cause said diagonal edges to match corresponding edges of the inturned portions of said corners, the unoccupied portions of said margins being secured to the folded portions of said corners whereby to edect multiple thickness of the material of the blank over the corners and on opposite sides of said box.

3. lin a folding box, including in combination with a blank for forming a unit of said box, the corners of the blank being slotted diagonally and portions thereof folded inwardly, opposite outwardly extended portions of said blank having edges cut diagonally, folded inwardly and secured to adjacent margins thereof, and asecond time folded with said margins to cause said diagonal edges to match corresponding edges of the inturned portions of said corners, and the diagonally-cut edges of said margins to match the folding line thereof,- the unoccupied portions of said margins being secured to the folded portions of said corners whereby to effect multiple thickness of the material of the blank over the corners and on opposite sides of said box.

4. In a folding box, including in combination with a blank for forming a unit of said box, the corners of the blank being slotted and portions thereof folded inwardly, opposite outwardly extended portions of said blank folded inwardly and secured to adjacent margins thereof, and a second time folded with said margins,-the unoccupied portions of said margins matching the inturnedportions of said corners and secured thereto,the outer edges of the margins and the folding line of the portions secured thereto being substantially on a straight line and matching an edge of the folded portions of said corners.

5. In a folding box, including in combination with a blank for forming a unit of said box, folding lines scored on said blank, the corners of the blank being slotted and portions thereof folded inwardly, opposite outwardly extended, portions of said blank folded inwardly and secured to adjacent margins thereof, and a second time folded with said margins,-the unoccupied portions of said margins being secured to the folded portions of said corners whereby to e'ect multiple thickness of material over the corners and yon opposite sides of said box` i box, predetermined folding lines on said blank,-the corners of the blank being slotted and portions thereof folded inwardly, opposite outwardly extended portions of said blank folded inwardly and secured to adjacent margins thereof, and a second time folded with said margins,-the unoccupied portions of said margins being secured to the folded portions of said corners wherebyto effect multiple thickness of material over the corners and opposite sides of said box.

7. In a folding box, including in combination with a blank for forming a unit of said box, the corners of the blank being folded inwardly, opposite outwardly extended portions of said blank folded inwardly substantially on a line with main edges of the blankand secured to adjacent margins thereof, a portion of each of said margins, matching the folded portion of the adjacent corner, remaining exposed, said margins being folded on lines substantially parallel with said edge lines and having said exposed vportions secured to said corners.

8. In a folding box, including in combination with a blank for forming a unit of said box, the corners of the blank being folded inwardly, opposite outwardly vextended portions of saidblank folded inwardly substantially on a line with main edges of the blank and secured adhesively to adjacent margins thereof, a portion of each margin matching the folded portion of a corner remaining exposed, said margins being folded on lines substantially parallel to said edge lines and having said exposed portions secured adhesively to said corners.' y

9. In a folding box, including in combination with a blank for forming a unit of said box, the corners of the blank being slotted diagonally and portions thereof turned inwardly, margins of the blank turned inwardly and secured, adhesively to the inturned portions of said corners with their corresponding diagonal edges matching the folding line and their main edges matching the straight edges of the inturned portions of said corners.

10. A blank for forming a unit of a folding box, consisting of an integral rectangular-shaped piece of material having folding lines o f the corners thereof predetermined thereon,-said folding lines consisting of lines intersecting at right angles at a point on said material and extending outwardly to adjacent edges thereof, a diagonal line outside said angle extending outwardly from said point of intersection to an edge of the material, and a diagonal slot within said angle extending outwardly from said point of intersection to a corner of the material.

In testimony whereof, I affix my signature.

sAMUELBERGsT-EIN. 

